Eliza Ward: Brian, hey — I want to try something. Name a single grocery item with a 70% gross margin.
Brian Reed: Seventy percent — I mean, like, a very fancy coffee? Prepared food, maybe?
Eliza Ward: That's actually a better answer than Grok gave Mark Cuban on August 4th. Cuban queried Grok specifically on which grocery SKUs hit 70% gross margins — that's the threshold needed to absorb a 30% consumer discount without an external subsidy. And Grok's verdict was: almost no consistent grocery category gets there. Not almost none of the cheap stuff. Almost none, full stop.
Brian Reed: Wait — Cuban ran this query specifically because of Mamdani's plan?
Eliza Ward: Yeah. Mamdani announced on July 27th — five city-owned grocery stores, one per borough, 30% below retail, $70 million capital fund, Hunts Point in the Bronx as the flagship site, opening late 2027. And eight days later, Cuban posts the Grok analysis on X. The breakeven modeling, the SKU margin question — it's a pretty systematic takedown.
Brian Reed: So the Grok query wasn't abstract curiosity, it was a direct response to a specific mayoral announcement. That changes what we're — actually, no, I want to hold on that margin number for a second. If almost no grocery category clears 70%, where does that leave the plan?
Eliza Ward: It leaves the plan as an operating subsidy wearing a grocery store's apron. The retail format — the stores, the prices, the membership card — that's the visible part. But the math says the subsidy is the actual product. And we don't know the size of it, because Mamdani hasn't published the annual operating cost.
Brian Reed: Right — but the part that doesn't fit is: Cuban's query tells us what the margins aren't. It doesn't tell us what the city's actual plan is to cover the gap. Those might be two different questions.
Eliza Ward: Right — but that distinction is actually the whole problem. Think of it like a friend running a road trip budget. They've itemized every hotel, every meal, every toll — and then they leave the gas price as TBD. The budget looks terrifying. But you haven't actually filled in the number that drives everything else.
Brian Reed: So the operating subsidy is the gas price.
Eliza Ward: The operating subsidy is the gas price. Mamdani confirmed $70 million for construction and build-outs on July 27th — that's real, that's capital allocation. But the annual operating number, the thing that covers the gap between 30%-below-retail and whatever breakeven actually is — that's still being debated. His announcement didn't finalize it.
Brian Reed: Hang on — so Cuban's Grok analysis, the SKU margins, the 15% gross margin breakeven modeling — it's stress-testing a model where the most important variable is still blank?
Eliza Ward: Yes. And — wait, here's what that actually means. Cuban's skepticism is legitimate AND incomplete for the exact same reason. Because Grok found no consistent grocery category hits 70% gross margins, fine, that's a real structural finding. But the city's answer to that might just be — we write a check. The question is what size check. And nobody's published that.
Brian Reed: So the pessimists and the optimists are both, I mean — they're both doing margin math on a store where the subsidy line is still blank. That's not a debate, that's just two people arguing about a road trip budget before anyone's checked the gas price.
Eliza Ward: Exactly that. And Friedberg's read actually fits here — he's not saying the math works. He's saying once Hunts Point opens and it's popular, the city never gets to publish that number cleanly. The subsidy becomes the floor, not the question.
Brian Reed: Which means the moment to ask what this actually costs is right now — before 2027, before the store opens, before the membership cards go out with no residency check attached.
Eliza Ward: And that window — before the cards go out — is basically closed. Because here's what the no-residency check actually does to the food-desert rationale. Mamdani frames this entire thing as relief for places like Hunts Point. Low-income New Yorkers, limited access, the food desert argument. But the membership card requires no proof of New York City residency. None. So the population absorbing the subsidy and the population the subsidy is targeting — those aren't the same set.
Brian Reed: Wait, so literally anyone can enroll?
Eliza Ward: Online, thirty seconds, no verification. Picture a Saturday morning in March 2028 — a family from suburban New Jersey loads a cooler into their SUV, drives to Hunts Point, flashes a card they got online, and bulk-buys chicken and eggs at 30% below what their local Stop and Shop charges. That family is not the target. That family is fiscal exposure.
Brian Reed: And the city — I mean, the city eats the gap on every one of those transactions.
Eliza Ward: Every single one. And the operating subsidy — remember, still unquantified — was presumably sized around a Hunts Point-scale population. Not a regional bulk-buying draw.
Brian Reed: The comparison that keeps nagging me is Costco. Because Costco is literally the private-sector benchmark people cite for this kind of high-volume, thin-margin operation. And Costco charges a membership fee. With identity verification. That's not incidental — that's how they control who's inside the model.
Eliza Ward: Right. And the city's version is — a library card. Without the library's address requirement. So now the city faces this dilemma that has no clean exit: tighten eligibility later and you've just contradicted the universal-access promise Mamdani made on July 27th. Leave it open and the subsidy exposure scales with whoever shows up.
Brian Reed: That's — yeah, that's actually where the hot take lands. The food-desert framing is real, the Hunts Point need is real, but the mechanism doesn't match the stated goal. The design is universal even though the justification is targeted.
Eliza Ward: And Friedberg's argument makes this considerably worse — we'll get there, but his warning isn't about the math failing. It's about the stores working. Politically. Which is a different kind of problem entirely.
Brian Reed: But that's — wait, that's the part Friedberg is actually flagging, right? Not that the math fails. That it doesn't have to fail to become a trap.
Eliza Ward: That's exactly his argument on All-In. He said the consensus prediction — that the stores radically fail — is the wrong forecast. His concern is the opposite outcome: Hunts Point opens late 2027, low-income shoppers are using it, it's genuinely popular, and at that point the political incentives all point in one direction.
Brian Reed: Expansion before the audit.
Eliza Ward: Five boroughs by 2029 is the stated plan. And Friedberg's warning is — the subsidy data, the actual per-store operating cost, that never gets published cleanly because closing a popular store in a low-income neighborhood is politically impossible. So the fiscal question gets deferred. Then another city replicates the model. Then another.
Brian Reed: Which means Dana Perino's take and Brandon Gill calling it destructive socialism — that's almost beside the point? Like, the partisan framing misses what Friedberg is actually describing.
Eliza Ward: Completely beside it. The Fox News frame is — this hurts private grocery owners, it's ideological overreach. But Friedberg is accepting the stores might work on their own terms and saying that's the more dangerous scenario. Political contagion dressed as a success story.
Brian Reed: So the calibrated verdict isn't — will this store survive? It's — does it survive long enough to become the template before anyone actually tallies the subsidy bill? Those are, I mean, those are genuinely different questions.
Eliza Ward: Cuban and Grok measured retail math. Friedberg measured political physics. And the retail math — okay, it's damning, no grocery category consistently hits 70% gross margins, the breakeven modeling is brutal. But political physics says: once a store is open and popular in Hunts Point, the window to demand fiscal accountability closes. The timing gap between popularity and cost transparency — that's the actual risk.
Brian Reed: So the defensible claim isn't that this fails. It's that success without a published subsidy model is harder to unwind than failure would have been.
Eliza Ward: And that's actually where I land. Not on whether the math fails. On the timing. The operating subsidy is still unfinalized — that's confirmed, that's as of July 27th — and the clock runs one direction only from here.
Brian Reed: So Cuban and Grok ran the most rigorous afternoon analysis of a plan that left its most important number blank. Respect the method. Note the missing variable.
Eliza Ward: That's the whole thing, right there. Mamdani didn't announce a grocery store. He announced a subsidy program with a grand opening date. The question isn't whether it pencils out — it's who has to explain the number when it finally gets written in.
Brian Reed: Yeah. That's — I mean, that's an uneasy place to stop, but it's the honest one.
Eliza Ward: Unresolved is the accurate word.
Brian Reed: Good conversation. Genuinely.
